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解方程.1112X-120%X=6.51112X-120%=6.5.

题目详情
解方程.
11
12
X-120%X=6.5             
11
12
X-120%=6.5.
▼优质解答
答案和解析
(1)
11
12
X-120%X=6.5
-
17
60
X=6.5
-
17
60
X÷(-
17
60
)=6.5÷(-
17
60

                 X=-
390
17


(2)
11
12
X-120%=6.5
11
12
X-120%+120%=6.5+120%
         
11
12
X=7.7
     
11
12
11
12
=7.7÷
11
12

            X=8.4.